GREEN SYNTHESIS OF MCM-49 ZEOLITE USING LOW TOXICITY TEMPLATE

Qin Tizhi, Jiang Di, Jiang Wenjing, Li Zhaoxu, Lu Hongyu and Zhang Yu

ABSTRACT:MCM-49 zeolites have been synthesized by dynamic hydrothermal method with piperazine (PIP) as low toxicity template to replace traditional cancerogenic hexamethyleneimine (HMI). The structure and physical-chemical properties of synthesized samples were studied by means of various characterization techniques, such as XRD, SEM, N2 adsorption-desorption, and NH3-TPD. The effects of PIP to HMI ratio in composite template were investigated. Results show that high crystalline and high purified MCM-49 zeolites could be synthesized using PIP as template to completely or partially replace HMI.

Keywords:MCM-49 zeolite, template, piperazine, hexamethyleneimine